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;*****************************************************************************
;* x86-optimized functions for interlace filter
;*
;* Copyright (C) 2014 Kieran Kunhya <kierank@obe.tv>
;* Copyright (c) 2014 Michael Niedermayer <michaelni@gmx.at>
;*
;* This file is part of Libav.
;*
;* Libav is free software; you can redistribute it and/or modify
;* it under the terms of the GNU General Public License as published by
;* the Free Software Foundation; either version 2 of the License, or
;* (at your option) any later version.
;*
;* Libav is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;* GNU General Public License for more details.
;*
;* You should have received a copy of the GNU General Public License along
;* with Libav; if not, write to the Free Software Foundation, Inc.,
;* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION_RODATA
SECTION .text
%macro LOWPASS_LINE 0
cglobal lowpass_line, 5, 5, 7
add r0, r1
add r2, r1
add r3, r1
add r4, r1
neg r1
pcmpeqb m6, m6
.loop:
mova m0, [r3+r1]
mova m1, [r3+r1+mmsize]
pavgb m0, [r4+r1]
pavgb m1, [r4+r1+mmsize]
pxor m0, m6
pxor m1, m6
pxor m2, m6, [r2+r1]
pxor m3, m6, [r2+r1+mmsize]
pavgb m0, m2
pavgb m1, m3
pxor m0, m6
pxor m1, m6
mova [r0+r1], m0
mova [r0+r1+mmsize], m1
add r1, 2*mmsize
jl .loop
REP_RET
%endmacro
INIT_XMM sse2
LOWPASS_LINE
INIT_XMM avx
LOWPASS_LINE
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